BTECH GMRS-20V2 vs Radioddity DB20-G 20-watt mobiles from the FCC filings

FCC ID records side by side

Maker specs side by side

Key differences

Filed power: close, but measured on different bases. The GMRS-20V2 grant lists ERP: 18.41 W on the 462 MHz main channels, 4.93 W on the 462 MHz interstitials and 17.5 W on the 467 MHz repeater inputs (2AGND20V2G). The DB20-G grant lists conducted power: 4.97 W on the 462 MHz interstitials and 19.54 W on the 467 MHz repeater inputs (2AN62-DB20G). Conducted power is measured at the antenna jack and leaves out antenna gain, so the two sets of numbers can’t be lined up exactly. Both are far below the 50 W limit for mobiles on the main channels (§95.1767(a)(1)).

The DB20-G filing has no 462 MHz main-channel row. GMRS channels 15–22 sit on 462.550–462.725 MHz for simplex, and their repeater inputs on 467.550–467.725 MHz. Here’s what each document lists for the DB20-G:

• FCC grant: two Part 95E rows, 462.5625–462.7125 MHz and 467.55–467.725 MHz. The DB20-G grant is a change in identification of T4K-779UV, granted 2020-10-16 to Qixiang Electron Science & Technology, and that grant lists the same two rows (T4K-779UV).
• Original Part 95E test report: “462.5625MHz -462.7125MHz(5W)” and “467.5500MHz -467.7250MHz(20W)”. Its channel table puts channels 15–22 on 467.550–467.725 MHz (test report).
• Radioddity’s spec: transmits “462.550-467.725MHz” at 18 W (Radioddity).

Under §95.1763, mobiles use the 467 MHz main channels only to talk through a repeater (or for brief tests), so 462 MHz is where a mobile talks simplex. The GMRS-20V2 grant covers all three ranges a mobile uses. We can’t tell from the public record why the DB20-G’s 462 MHz main channels aren’t listed. If you mainly talk simplex car-to-car, the GMRS-20V2’s filing is the complete one.

Narrowband vs wideband in the filings. The DB20-G grant lists one emission code, 11K0F3E (narrowband FM, about 11 kHz), and the test report was run at 12.5 kHz channel spacing. Radioddity’s CPS V2.02 release note says it changed “the default bandwidth from Narrow to Wide.” The GMRS-20V2 grant lists 15K1F3E on the 462 MHz main channels and 14K9F3E on the others (wideband FM).

Weather sealing. BTECH rates the GMRS-20V2 IP67 (“fully submersible protection for rain, mud, snow, dust, and outdoor mounting conditions”). Radioddity lists no IP rating for the DB20-G. For an open Jeep, a UTV or a boat, that’s the deciding spec.

Install distance. The grants set the antenna’s minimum distance from people at 49 cm for the GMRS-20V2 and 71.372 cm for the DB20-G. On a car roof both are easy. On a short cab or a roll cage, the GMRS-20V2’s figure is easier to meet. Neither grant states an antenna-gain limit.

Antenna gain on channels 1–7. Both are filed just under the 5 W ERP limit on the 462 MHz interstitials (§95.1767(b)): 4.93 W ERP on the GMRS-20V2 and 4.97 W conducted on the DB20-G. The DB20-G’s report lists a 0 dBi test antenna. A higher-gain roof antenna adds to what radiates, so keep simplex traffic on channels 15–22 or use a repeater (vehicle antennas).

Layout and controls.

• GMRS-20V2: a 4 × 1.5 × 4 in body (14.9 oz) with the controls on the microphone. BTECH says to “mount the compact radio body out of the way.”
• DB20-G: a 124 × 101 × 36 mm body (0.45 kg) with the “control buttons, speaker, microphone integrated into one handset” and a large color display.

Channels and programming.

Sources: GMRS-20V2 page and DB20-G page, checked 2026-10-21.

Warranty. Radioddity gives 1 year 6 months when bought from radioddity.com and 1 year through other platforms. We didn’t find a warranty term on BTECH’s GMRS-20V2 page.

r/gmrs owners discuss both: I have a DB20-G as a base station and one in my car, BTECH 20V2 help and BTECH GMRS 20v2 or Radioddity DB25-G for mobile unit.

Which one fits you

• Open Jeep, UTV, boat or anything exposed to rain: the GMRS-20V2. It’s the only mobile in our database rated IP67.
• You talk simplex car-to-car on channels 15–22: the GMRS-20V2, whose grant covers the 462 MHz main channels.
• You want everything in one handset and lots of receive-only scanner memories: the DB20-G, with 500 channels and the programming cable included.
• You need more power for a base station: step up to a 50 W radio. See GMRS-50V2 vs MXT500 and GMRS base station setup.
• Programming: both are on CHIRP. See how to program a GMRS radio with CHIRP.

Licensing: both transmit on GMRS frequencies, so you need an FCC GMRS license (how to get one).

The GMRS-20V2's warranty and SAME support for both radios are not yet verified.